651284821131816 has 32 divisors (see below), whose sum is σ = 1635928697642400. Its totient is φ = 216066054402240.

The previous prime is 651284821131793. The next prime is 651284821131821. The reversal of 651284821131816 is 618131128482156.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64305368271 + ... + 64305378398.

It is an arithmetic number, because the mean of its divisors is an integer number (51122771801325).

Almost surely, 2^{651284821131816} is an apocalyptic number.

It is an amenable number.

651284821131816 is an abundant number, since it is smaller than the sum of its proper divisors (984643876510584).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

651284821131816 is a wasteful number, since it uses less digits than its factorization.

651284821131816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128610746889 (or 128610746885 counting only the distinct ones).

The product of its digits is 4423680, while the sum is 57.

The spelling of 651284821131816 in words is "six hundred fifty-one trillion, two hundred eighty-four billion, eight hundred twenty-one million, one hundred thirty-one thousand, eight hundred sixteen".